Flow of Diagnosis

1. Verify the customer's concern by operating the electronic door lock control system to duplicate the condition.
2. Inspect to determine if one of the following mechanical or electrical concerns apply:

VISUAL INSPECTION CHART

Mechanical
^ Binding Latches.

Electrical
^ Open Fuses:
- Fuse junction panel Circuit Breaker 14 Fuse 8 (15 A).
^ Loose Connectors.
^ Corroded Connectors.

3. If inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the data link connector (DLC) located beneath the instrument panel to perform DATA LINK DIAGNOSTICS test.
If the NGS responds with NO RESPONSE/NOT EQUIPPED for the driver door or lighting control module(s), go to Pinpoint Test C for driver door module or Pinpoint Test D for lighting control module.
If the DATA LINK DIAGNOSTICS test is passed for the driver door module or lighting control module, retrieve continuous Diagnostic Trouble Code (DTCs) and execute Self Test Diagnostics for the driver door module or lighting control module to retrieve current DTCs.
5. If self test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.
6. If DTCs are retrieved, go to the Driver Door Module or Lighting Control Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If the driver door module or lighting control module cannot be accessed by the NGS, go to Pinpoint Test C for driver door module or Pinpoint Test D for lighting control module.

Pinpoint Tests
Symptom Related Diagnostic Procedures
A L L Diagnostic Trouble Codes ( DTC )